D2D Context Reuse in LTE Wireless Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Long Term Evolution (LTE) based wireless wide area networks (WWANs) lack functionality to associate parameters with device expressions for D2D communications, leading to inefficient use of resources and lack of control over link security and user experiences in device-to-device (D2D) connections.
Innovation Solution
A method and apparatus where a Mobility Management Entity (MME) receives a request from a first UE to establish a communication link with a second UE based on an expression pair, determines if they can use a previously established context, and provides relevant information to the UE to reuse the context for efficient D2D communication, thereby optimizing resource use and enhancing link security and user experiences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate D2D context is established for each expression pair, then link security and service control are improved, but WWAN resource consumption and network load increase
Solution Approach 1:
The patent merges multiple D2D contexts into a single shared context when multiple expression pairs use the same security parameters and QoS requirements. Instead of creating separate contexts for each expression pair, the system consolidates them by identifying common security contexts and reusing them across multiple expression pairs, thereby reducing WWAN resource consumption while maintaining link security.
Solution Approach 2:
The patent implements a universal D2D context structure that can serve multiple expression pairs simultaneously. A single D2D context is designed to be multi-functional, supporting multiple expression pairs that share the same security context and QoS parameters, thus eliminating the need for separate contexts and reducing overall network resource usage.
2Adaptability or versatility
If multiple D2D contexts are established for different expression pairs, then service differentiation and user experience control are improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent segments D2D contexts into two categories: security contexts and service contexts. Security contexts are shared across multiple expression pairs to reduce complexity, while service contexts maintain differentiation for QoS and user experience control. This segmentation allows service differentiation without requiring separate full contexts for each expression pair, thereby reducing processing overhead.
Solution Approach 2:
The patent implements dynamic context selection where the system determines whether to use a shared or separate D2D context based on the specific requirements of each expression pair. This dynamic approach allows the system to optimize between security requirements and service differentiation needs, reducing overall device complexity while maintaining necessary adaptability.
3Reliability
If D2D context establishment is assisted by the network, then link security and authentication are improved, but network load and signaling overhead increase
Solution Approach 1:
The patent implements preliminary establishment of shared D2D contexts during initial device pairing or registration with the network. By pre-establishing security contexts before actual D2D communication begins, the system reduces the need for repeated network-assisted context establishment, thereby maintaining authentication security while reducing ongoing network load and signaling overhead.
Solution Approach 2:
The patent enables UEs to copy and reuse existing D2D contexts for multiple expression pairs instead of requiring fresh network-assisted establishment each time. The first UE can copy the D2D context from a previous establishment and use it for subsequent communications with the same second UE, maintaining security through cryptographic verification while significantly reducing network load.
Data Source
AI summary
A method, an apparatus, and a computer program product for wireless communication are provided in connection with use of expressions with D2D communications in a LTE based WWAN. In one example, a MME is equipped to receive a request from a first UE to establish a communication link with a second UE based on a first expression pair, determine whether the UEs can use a first context associated with previously used expression pair, and provide information associated with the first context to the first UE. In another example, a UE is equipped to send a connection request, to its MME, to establish a communication link with a second UE based on a first expression pair, receive at least a portion of information associated with a first context between the UEs based on a previously used expression pair, and establish the communication link with the second UE using the received information.